公开(公告)号：US20030026295A1

公开(公告)日：2003-02-06

申请号：US09882840

申请日：2001-06-15

Applicant: MOTOROLA, INC.

Inventor： Kevin L. Baum ,  Nikhil S. Nadgauda

IPC: H04L007/00

CPC classification number: H04L27/2662 ,  H04L7/06 ,  H04L27/2659 ,  H04L27/266 ,  H04L27/2675 ,  H04L27/2679 ,  H04L2027/0036

Abstract: An apparatus (30) for and method of synchronizing OFDM signals utilizes a single baud to provide synchronization in time, frequency, and per-subcarrier rotation (201). Timing and fractional subcarrier frequency synchronization may be obtained from either a known or unknown (e.g., data symbol) baud having known symmetry properties. Because all three synchronization tasks may be accomplished utilizing a single sync baud, the present invention spectrally efficient. A differential correlation metric is utilized to efficiently provide integer subcarrier frequency synchronization and per-subcarrier rotation synchronization.

Abstract translation: 用于OFDM信号同步的装置（30）和同步方法利用一个波特率来提供时间，频率和每个子载波的同步（201）。 定时和分数子载波频率同步可以从具有已知对称性质的已知或未知（例如，数据符号）波特获得。 因为可以利用单个同步波特率来实现所有三个同步任务，所以本发明的光谱有效率。 利用差分相关度量来有效地提供整体子载波频率同步和每子载波旋转同步。